compose: make headerEditor focusing more reliable

Focusing header editors was hardcoded as integers which only worked with
the default ui. If a user changed the UI to, for example, put CC as a
field below "to", FocusSubject would focus the CC field instead of the
subject. This commit reuses and modifies the function FocusEditor to
generalize the focusing of header editors - which can now be called by
name via FocusEditor(name string)

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>

3 files changed, 10 insertions, 22 deletions

diff --git a/commands/msg/forward.go b/commands/msg/forward.go
index 9cc13c00..c8e04f17 100644
--- a/commands/msg/forward.go
+++ b/commands/msg/forward.go
@@ -94,7 +94,7 @@ func (forward) Execute(aerc *widgets.Aerc, args []string) error {
 
 		tab := aerc.NewTab(composer, subject)
 		if !h.Has("to") {
-			composer.FocusRecipient()
+			composer.FocusEditor("to")
 		} else {
 			composer.FocusTerminal()
 		}
diff --git a/widgets/aerc.go b/widgets/aerc.go
index a8b23fe7..c96932c4 100644
--- a/widgets/aerc.go
+++ b/widgets/aerc.go
@@ -575,14 +575,14 @@ func (aerc *Aerc) Mailto(addr *url.URL) error {
 		return nil
 	}
 	composer.SetContents(strings.NewReader(body))
-	composer.FocusSubject()
+	composer.FocusEditor("subject")
 	title := "New email"
 	if subject != "" {
 		title = subject
 		composer.FocusTerminal()
 	}
 	if to == nil {
-		composer.FocusRecipient()
+		composer.FocusEditor("to")
 	}
 	tab := aerc.NewTab(composer, title)
 	composer.OnHeaderChange("Subject", func(subject string) {
diff --git a/widgets/compose.go b/widgets/compose.go
index 13002295..64eb2859 100644
--- a/widgets/compose.go
+++ b/widgets/compose.go
@@ -294,20 +294,6 @@ func (c *Composer) FocusTerminal() *Composer {
 	return c
 }
 
-func (c *Composer) FocusSubject() *Composer {
-	c.focusable[c.focused].Focus(false)
-	c.focused = 2
-	c.focusable[c.focused].Focus(true)
-	return c
-}
-
-func (c *Composer) FocusRecipient() *Composer {
-	c.focusable[c.focused].Focus(false)
-	c.focused = 1
-	c.focusable[c.focused].Focus(true)
-	return c
-}
-
 // OnHeaderChange registers an OnChange callback for the specified header.
 func (c *Composer) OnHeaderChange(header string, fn func(subject string)) {
 	if editor, ok := c.editors[strings.ToLower(header)]; ok {
@@ -374,7 +360,7 @@ func (c *Composer) MouseEvent(localX int, localY int, event tcell.Event) {
 	for _, e := range c.focusable {
 		he, ok := e.(*headerEditor)
 		if ok && he.focused {
-			c.FocusEditor(he)
+			c.FocusEditor(he.name)
 		}
 	}
 }
@@ -722,10 +708,12 @@ func (c *Composer) NextField() {
 	c.focusable[c.focused].Focus(true)
 }
 
-func (c *Composer) FocusEditor(editor *headerEditor) {
+func (c *Composer) FocusEditor(editor string) {
+	editor = strings.ToLower(editor)
 	c.focusable[c.focused].Focus(false)
-	for i, e := range c.focusable {
-		if e == editor {
+	for i, f := range c.focusable {
+		e := f.(*headerEditor)
+		if strings.ToLower(e.name) == editor {
 			c.focused = i
 			break
 		}
@@ -768,7 +756,7 @@ func (c *Composer) AddEditor(header string, value string, appendHeader bool) {
 		editor.storeValue()
 	}
 	if value == "" {
-		c.FocusEditor(c.editors[header])
+		c.FocusEditor(c.editors[header].name)
 	}
 	c.updateGrid()
 }